one thing about the heal, is that it heal any savage at 4¨ of any dropped ice pilar, so those pilar created by the trigger when removing markers will also create a healing aura, increasing considerably the range of the heal.
any model that is 5¨away of a marker will get healed if you place the initial ie pilar 2¨away o the marker ( 5¨because you can place the new pilar a 30mm base closer).
In the ideal situation (and ounting only 3mm makers) the heal could have a efective radius of 2¨ + marker base( 30mm) + new pilar base ( 30mm) + 4¨ = 7.6¨ thats really big